Fan attachment for sewing-machines



` P. FILIPPINI. FAN ATTACHMENT FJOH SEWING MACHINES., APPLICATION FILEDocT. I4. 1919.

1,366,776, Patented Jan. 25, 1921.

OFFICE.

PEDRO .F-NILIPPINT, @F MAZATLAN, MEXICN).`

FAN ATTACHMENT FOB SEWING-MACHINES.

To all whom t may concern.'

Be it known that I, PEDRO FiLirriNi, a subject of the King of Italy,residing at Mazatlan, State of Sinaloa, Mexico, have invented certainnew and useful Improvements in Fan Attachments for Sewing-Machines, ofwhich the following Vis a specication.

This invention relates to fan attachments for sewing machines and has asits object to provide an attachment which may be readily applied to anddetached from practically any standard make of sewing machine and whichwill, in the operation of the machine, create a cooling current of airwhich will be blown in the direction of the operator of the machine toafford comfort while Working. f

Another object of the invention is to provide an attachment of the classmentioned so constructed that the same may be applied without the use oftools of any description and when in place upon the ily wheel of themachine will be securely held in posi tion and therefore not liable towork loose or be thrown oft from the wheel.

A further object of the invention is to so construct the device thatVwhile fan blades of maximum size and considerable pitch may be employedwithout interfering in any way with the belt or other parts of the seweing machine to whichl the device is applied, the blades are furthermoreso proportioned and of such contour as to most effectually direct theair currents in the operators di rection.

In the accompanying drawings:

Figure 1 is a view in elevation of thedevice applied to a sewing machineof a standard type;

Fig. 2 is Fig. 3 is a vertical longitudinal sectional view through thehub portion thereof.

I have designed theattachment embodying the present invention with theobject in view of rendering the same practically universal in itsapplication and as a general rule it will be found that the structureillustrated in the drawings and hereinafter described is adaptable tovarious standard makes of machines. It will be understood, however,that, within the terms of the claim, modifications may be resortedto'either in the proportions or shapes of the parts whenever foundnecessary. v In vthe drawings he numerall indicates a side elevationv ofthe device;

tate with the said wheel, the said hub Specification of Letters Patent.vPgfdnted Jann 259 19210 4Application led October 14,' 1919.

Serial No. 330,656. l

in generalthe head of a sewing machine, 2 the ily wheel thereof, and 3the usual milled nut which is fitted onto the shaft of they wheel, themilled flange of this vnut being indicated by the' numeral et. Thesearts or elements are o-f the usual construction and are only hereinreferred to in order to illus- Atrate the application of the invention.-

Ihe attachment comprises a hub which is indicated in general by thenumeral 5, the

said hub comprising a hollow cylindrical' body 6 of sheet metal or othermaterial suitable for the purpose. At one end this/body- 'eral by thenumeral 11 and each blade has a shank 12 which is disposed against theouter face of the head 8 and riveted or other;

wise secured as indicated byl the numeral.

13, to the said head. rIhe blades 11 all face in the direction ofrotation of the attachment and the advancing side or edge `portion ofeach blade,y indicated by the numeral 14, occupies nearly the plane ofthe head 8 of the hub of the attachment, each blade being curved fromthis edge in a rearward and lateral direction so as to provide adeflected side 15 which is presented obliquely in the direction ofrotation of the attachment. At this point it will be evident-,that theadvancing edges of the blades will cleave the air and the folloWin edgeportions of.

the blades, being latera ly deflected, will force the lair in thegeneral direction ofthe front of the machine head and consequentlylaterally toward the operator of the machine.

In order that rthe hub 5 may be attached to the iy wheel of the machineso as to roprovided with a number of clip' fingers indicated generalbythe numeral 16. Each of.

these fingers comprises a leaf spring shank 17 the inner end of which isdisposed to abut as at 18 against the overturned flange 9 of the head 8of the hub, a rivet yor other suitable fastening element 19 beinglsecured isf'ios through the said shank near its said end and throughthe wall of the hub. ln this man ner, while but a single rivet or otherfastening element is employed, the shank will be securely heldin placeand prevented from pivoting or twisting Aupon its pivot by reason of thefact that its said end bears squarely against the said flange 9. Fromits point of attachment, 'the shank` is curved slightly outwardly fromthe surface of the body 6 of the hub as most clearlyshown in Fig. 3 ofthe drawings and is thence curved inwardly near its outer endas at 20 inthe direction of the aXis of the hub. Each iinger is provided at theouter end of its shank with a shoulder 21 having an abrupt face 22 andan inclined face 23, the terminal of the shoulder being curved outwardlyas at 24el to provide a lip by means of which the clip finger may besprung outwardly 'in detaching the device from the lly wheel of themachine. lln applying the device, the same isl disposed parallel to thefly wheel-with the faces 23 of theA shoulder portions 2l engagingagainst the'A flange 4e of the nut 3 and the attachment is then bodilymovedlaterally in the direction of the'ly wheel'until the shoulders 21ride over the said flange d and their faces 23 engage behind the saidflange as shown in Fig. l. In this position of the parts, the flange 7will bear, as pre-` viously stated, against the end face of thellnasmuch as the hub 6 is hollow7 it will be understood that should thenut 3 be provided with any projecting portions upon its end face, theseportions will be accommodated wilthin the hub 6 and will therefore notinterfere with `the attachment of 4the hub p Having thus described theinvention, what is claimed as new is:

An attachment of the class described comprising a hollow cylindrical hubhaving an inwardly projectingange at one end consti- -twting anabutment, and resilient clip fingers disposed against the outer side ofthe hub and extending longitudinally thereof and secured at one end tothe hub, the other end of .I each clip linger projecting beyond the saidflanged end of the hub and provided with a locking shoulder facing andspa-ced from the said flange.

ln testimony whereof ll affix my signature.

, f FEDE@ FlLllPPllNll. [n a]

